Similar words: cancelled, singlet, single, cancelled check, jingled, singles, single out, singleton. Meaning: adj. having a single cell (and thus not divided into cells).
(31) That's something we humans have trouble enough with, let alone a single-celled organism without a neuron to call its own.
More similar words: cancelled, singlet, single, cancelled check, jingled, singles, single out, singleton, single bed, right-angled triangle, single room, single-phase, singleness, single file, intermingled, in single file, single-minded, single-handedly, single-mindedly, single-mindedness, cell organelle, angled, mangled, bungled, tangled, nerve cell, spangled, wine cellar, strangled, untangled.